[3201] "Tidy up Paths for all Masters" completely screwed

Hello, I’ve noticed this bug for a while, not sure whether it already was present before 3201.

Running “Tidy up Paths for all Masters” results in some rather whacky outlines:

See the background for the original path.
Just in one master works fine.

I have fixed it already.

Right, sorry for the late report, then :grimacing: